Schneider Optics True-Streak Blue 4 x 5.65 inch Filter (2mm Medium) (p/n 68-500256). Clearly the most effective and exciting way to simulate the anamorphic streak effect with virtually any lens, anamorphic or not. Long, brilliantly colored streaks emanate from bright lights and highlights. This filter has a "medium" strength with a spacing of 2mm between its "streaks".